cohen



ZSheets-Sheet 1.

t(No Model.)

S. A. COHEN.

'BOOK LOGK.

Patented Nov. 6, 1888.

Witnesses,

,N. PETERS PhMO-LHMKHPMI', Wahlnm 17.8.

(No Model.)

' 2 Sheets-Sheet 2. S. A. COHEN.

BOOK LOCK.

Patented Nov. 6, 1888.

Jnrwzl'or:

Witnesses UNITED STATES PATENT @FFICE.

STANLEY A. COHEN, or iinw YORK, n. Y.

BOOK-:LOCK.

SPECIFICATION forming part of Letters Patent No. 392,411, dated November6, 1888.

Application filed August 1,1888.

, To all whom it may concern.-

' xx, Fig. 1, the book being left out.

5o stud, f, containing a series of notches.

Be it known that I, STANLEY A. COHEN, of the city of New'York and theState of New York, have invented certain new and useful Improvements inBook-Locks for Press-Copy- 1ng Letter-Books, of which the following is aspecification, reference being had to the accompanying drawings and theletters marked thereon, forming part thereof.

The object of the invention is to furnish a suitable lock attachment toa press-copying letter-book, so that the contents of the book cannot besurreptitiously examined while thebook is exposed for use during officehours or out of its safe or lock-up.

The present device is adjustable to different sized and thicknesses ofbooks.

In the accompanying drawings, Figure 1 is a perspective View of myimproved book-lock attached to a press-copying letter-book. Fig.

2 is a cross-section thereof, taken in the line Fig. 3 are detail viewsillustrating the manner in which the corner pieces or clamps of thebooklock are constructed so as to admit of their adjustment to books ofvariable thickness. Fig. 4 is a detail view illustratingthe manner inwhich the adjustment is effected, showing stud in one and thecorresponding hole in a pair of corner-clamps. The one having the holeis shown in section. Fig. 5 is a similar detail view to Fig. 4, showingthe ends of the corner pieces or clamps interlocked. Fig. 6 is amodification of my improved book-lock. Fig. 7 is a section on line y gof Fig. 6, taken in the direction of the arrows. This view also showsthe book in cross-section.

In the arrangement, Figs. 1 to 5, inclusive, a is a letter-presscopying-book. b b b b are two pairs of metal bands, two on each side ofthe book-cover, and connected together by rivets at b b. The other endsof these metal bands are respectively connected to the central portionsof the corner frames or clamps c c c 0. These corner frames or clampshave bent-over ends (I d d d at one side and lugs e e c 0' at theothcr'side or portion of the frames grasping the front edge of the book.From the lugs c 0 there projects down into the lugs c e a When SerialNoQSLGQi. (No model.)

the corner frame or clamp is in position on the book-that is, both ofits bars 0 cin a parallel position-one of these notches will be in thehole 9 in the lug c and so turned round therein that the notch willcatch onto the lug c. This determines the thickness of the book. Theoperation of the device to change it to another thickness of book willbe explained farther along. his a chain which is rigidly attached to theinner ends of bars b b, and is brought around to the other two, b I),which latter contains in its rivet an eye, c, over which a link of thechain may be placed. A small padlock, j, secures the chain in position,as seen in Fig. 1. The lazy-tongs action of bands b b b b, so connectedto each other at their inner ends and to the bands 0 c 0 'c at theircentral portions, will cause the device to adjust itself readily to thewidth and length of the book, the chain passing around the back of suchbook and being readily secured in one of its links to the bands I) b bb. The bands 0 cc 0' are changed from one thickness of book to anotherby throwing each pair of bands out of parallelism, as seen in Fig. 4,thus admitting of the release of the notch of the stud f from the hole gin the lug 6, so as to drop down or draw up through said hole 9 the studf to a proper position to suit the thickness of the letter-book onwhichit is desired to replace the device. hen the band 0 is turned aroundagain into parallelism with band a, as shown in Fig. 5, then one of thenotches on stud f will turn around and look into the flange c.

In the drawings, Figs. 6 and 7, the same construction of locking deviceis shown as in the other figures,eXcept that the corner frames or clampsc c c c are not furnished with bentovcr ends and lugs, so as to permitof the same character of adjustability for the thickness of the book.The provision in Figs. 6 and 7 is very simple. In the ends of thecorner-frames c c c c are slots 7c, in which are threaded leather bandsZZ ZZ. These bands will be drawn a little over the sides of the bookwhen such book is thinner than the full depth or complete letout of thebands. On the inner ends, I), of

the metal bands I) b b I) are also slots, so that the ends of theleather strap a may be secured thereto and the straps be buckled acrossthe hack of the book after the device is properly drawn over the book.

The padlock is inserted through an eye, 0, made in the tongue of thestrap-buckle, thus securing the contents of the book in thisniodification as effectually as shown in Figs. 1 to 5, inclusive.

I claim- 1. In the book-locking device herein described, the combinationof two corner frames or clamps with two pairs of adjustable bands andmeans for locking said frames and bands to the book, substantially asdescribed.

2. In the book-locking device herein described, the combination of thecorner frames or clamps e c c c with the adjustable bands I) b b b and achain for securing the inner ends of the bands I) b b b together and thedevice securely upon the book, substantially as described.

3. In the book-locking device herein described, the arrangement ofadjustable corner frames or clamps so that the members thereof can beseparated or drawn together by means of the notched stud f, placed uponone of the bars, 0, and passing down through the lug c on the other bar,0, substantiallyas described. STANLEY A. COHEN. Witnesses:

ALBERT S. ConnN, RICHARD WALroRD.

